Generation of short optical pulses using strongly complex coupled DFB lasers.
文献类型：专利
| 作者 | HUI, R.RONGQING; HONG, J JIN; O'SULLIVAN, S MAURICE |
| 发表日期 | 2001-03-28 |
| 专利号 | EP1087478A1 |
| 著作权人 | NORTEL NETWORKS LIMITED |
| 国家 | 欧洲专利局 |
| 文献子类 | 发明申请 |
| 其他题名 | Generation of short optical pulses using strongly complex coupled DFB lasers. |
| 英文摘要 | A compact source capable of generating continuously tunable high frequency microwave radiation and short optical pulses in the picosecond/sub-picosecond range is invented. It includes a laser structure having two lasers formed on the same substrate which simultaneously operate at different longitudinal modes. Each laser has a complex coupled (gain-coupled or loss-coupled) grating which is formed by deep etching through a multi-quantum well structure, either of the active medium or of the additional lossy quantum-well layers, thus ensuring no substantial interaction between lasers. The lasers have a common active medium and shared optical path and provide mutual light injection into each other which results in generation of a beat signal at a difference frequency of two lasers. The beat frequency is defined by spacing between the laser modes and may be continuously tuned by current injection and/or temperature variation. Thus, the beat signal provides a continuously tunable microwave radiation. To form a train of short optical pulses, the beat signal is either further sent to a saturable absorber followed by a semiconductor optical amplifier, or sent directly into an optical compressor which includes a dispersion fiber. As a result, a duration of each impulse is compressed, and a train of short optical pulses is formed. An embodiment of the invention, where N short pulse optical trains, each at frequency f, are combined so as to interleave and form one short pulse optical train at frequency Nf, is also provided. |
| 公开日期 | 2001-03-28 |
| 申请日期 | 2000-06-21 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/51286]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NORTEL NETWORKS LIMITED |
| 推荐引用方式 GB/T 7714 | HUI, R.RONGQING,HONG, J JIN,O'SULLIVAN, S MAURICE. Generation of short optical pulses using strongly complex coupled DFB lasers.. EP1087478A1. 2001-03-28. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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